import math

import core


class TunDrawer:
    def __init__(self, msp, layer, vec12, vec34, from_point, to_point, text, width):
        self.width = width
        self.text = text
        self.msp = msp
        self.layer = layer
        self.vec12 = vec12
        self.vec34 = vec34
        self.from_point = from_point
        self.to_point = to_point

    def draw_tun(self):
        color = core.get_color_by_layer(self.layer)
        for i in range(0, len(self.vec12), 2):
            pair = self.vec12[i:i + 2]
            point1 = pair[0][0], pair[0][1]
            point2 = pair[1][0], pair[1][1]
            # 取出每两个元素

            self.msp.add_line(point1, point2, dxfattribs={
                'color': color,
                'layer': f'图层{self.layer}'
            })

        for i in range(0, len(self.vec34), 2):
            pair = self.vec34[i:i + 2]  # 取出每两个元素
            point1 = pair[0][0], pair[0][1]
            point2 = pair[1][0], pair[1][1]

            self.msp.add_line(point1, point2, dxfattribs={
                'color': color,
                'layer': f'图层{self.layer}'
            })

        self.draw_tun_text()

    def draw_tun_text(self):
        length = core.distance(self.from_point, self.to_point)
        if length > 70:
            route = core.calculate_route(self.from_point, self.to_point)
            angle = math.degrees(route)
            from_point, to_point = core.parallel_line(self.from_point, self.to_point, 1.5*self.width)
            tun_center = core.find_point_on_line(from_point, to_point, 1 / 2)
            dxfattribs = {
                'insert': tun_center, 'style': 'msyh', 'color': core.get_color_by_layer(self.layer), "layer": f"图层{self.layer}"}
            self.msp.add_text(text=self.text, rotation=angle, dxfattribs=dxfattribs)